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Chemical product profile

HONGKUN / PRODUCT DIRECTORY

6-Chloropurine | CAS 87-42-3

A purine building block combining a C6 chloro substituent with an unsubstituted nitrogen framework, documented in 9-alkylpurine and substituted purine chemistry where base identity and related heterocycles require separate attention.

CAS87-42-3
Molecular formulaC5H3ClN4
Molecular weight154.56 g/mol

Product overview

A chlorine substituent at C6 and the fused purine ring provide two points of interest for synthesis: substitution at the chlorinated carbon and functionalisation of ring nitrogen. CAS 87-42-3 identifies the free purine base, with no ribose unit or additional 2-amino group. It is used in research syntheses of 9-alkylpurines, 6-succinoaminopurine and purine–carbohydrate derivatives. Material selection should establish the substitution pattern and the chromatographic separation of related purines before evaluating a batch in the intended reaction sequence.

Chemical identity

Chemical name
6-Chloropurine
CAS number
87-42-3
Molecular formula
C5H3ClN4
Molecular weight
154.56 g/mol

Application context

In 9-alkylpurine synthesis, the purine nitrogen framework provides a site for introducing an organic substituent. Preparation of 6-succinoaminopurine uses the C6 chloro function in substitution chemistry, while reactions with acetylated xylal have been investigated in purine–carbohydrate research. These transformations call for the parent base at a defined stage of the sequence. Specify whether the route requires 6-chloropurine, its riboside or an amino-substituted derivative, then agree the related-substance profile and any reaction-performance evaluation for the selected material.

Chemistry and synthetic role

The bicyclic purine ring contains multiple nitrogen atoms and chlorine bonded to C6. N-alkylation and substitution at the chloro position address different sites of this framework; the required starting structure and reaction site should match the selected route.

Quality review

Confirm the parent base

Check a structure-sensitive identity result against 6-chloropurine, excluding confusion with its riboside or 2-amino analogue.

Resolve related purine species

Agree which related heterocycles the chromatographic method must distinguish and how unknown peaks are reported.

Align assay and water reporting

Specify the basis of assay and a separate water result when accurate molar charging is important for the downstream substitution.

Preparing a specification

Request CAS 87-42-3 as the parent 6-chloropurine base. Define identity testing, chromatographic purity or assay, the agreed related-purine profile and water reporting. If a specific downstream transformation is used for qualification, state its acceptance criteria separately.

Packaging and storage

Packaging format, closure and net weight should be agreed for the selected grade, order quantity and destination. Request the actual supplier SDS and confirm its storage and transport instructions before receipt.

Documentation

Request the proposed specification, batch COA and SDS. Confirm availability of chromatograms or identity spectra that establish the chloropurine scaffold; ask for residual-solvent information where the selected manufacturing route makes it relevant.

Procurement questions

Is this 6-chloropurine riboside?

No. CAS 87-42-3 denotes the parent base without a ribose unit.

Does it have an amino group at position 2?

No. 2-Amino-6-chloropurine is a different compound and must be ordered separately.

What should the related-substance method resolve?

Agree the relevant purine analogues, chromatographic separation and unknown-peak reporting for the intended substitution sequence.

Technical sources
  1. PubChem CID 5359277NCBI / PubChem
  2. 6-Chloropurine 161179Sigma-Aldrich
  3. Biochemicals catalogue: 6-ChloropurineThermo Fisher Scientific / Alfa Aesar
  4. Synthesis of 6-succinoaminopurine [6-(1:2-dicarboxyethyl-amino)purine]Royal Society of Chemistry — Baddiley et al.